Backplate Adapter Ring for T04B FRAME Compressor Housing, for GT/GTX Turbos

T04B Frame Compressor Housing Backplate adapter ring.
Goes between the CHRA and the Compressor Housing
Standard on the GT/GTX28 Series Turbos but also can be a "compact" option on other larger turbo models. Please always match the compressor housing "frame size" to the appropriate back plate adapter ring.